They actually tease you by pretending to show results on their website [0] but when you click on any of the flights it just takes you to their homepage.
[0] https://www.hopper.com/deals/best/from/city-toronto-YTO/to/c...
[0] https://www.hopper.com/deals/best/from/city-toronto-YTO/to/c...
It used to exist as its own separate app called "Get The Flight Out" but for some reason we removed it from the app store. We also had a feature devoted to something similar for "flexible watching" but it never got much engagement and it didn't warrant the infrastructure cost it required to keep up.